dnsmasq < 2.66test2 libvirtd TCP Network Packet Parsing Response DNS Amplification DoS

medium Nessus Plugin ID 87595

Synopsis

The remote DNS / DHCP service is affected by a denial of service vulnerability.

Description

The remote dnsmasq server is running a version prior to 2.66test2. It is, therefore, affected by a denial of service vulnerability in libvirtd due to improper parsing of malformed network packets. An unauthenticated, remote attacker can exploit this to cause an amplification of a large amount of DNS queries, resulting in a denial of service condition.

Note that this vulnerability exists due to an incomplete fix for CVE-2012-3411.

Solution

Upgrade to dnsmasq 2.66test2 or later.

See Also

http://www.nessus.org/u?231727b4

http://www.thekelleys.org.uk/dnsmasq/CHANGELOG

Plugin Details

Severity: Medium

ID: 87595

File Name: dnsmasq_dos-CVE-2013-0198.nasl

Version: 1.3

Type: remote

Family: DNS

Published: 12/22/2015

Updated: 7/10/2018

Configuration: Enable paranoid mode

Risk Information

VPR

Risk Factor: Low

Score: 2.5

CVSS v2

Risk Factor: Medium

Base Score: 5

Temporal Score: 3.7

Vector: AV:N/AC:L/Au:N/C:N/I:N/A:P

Temporal Vector: E:U/RL:OF/RC:C

Vulnerability Information

CPE: cpe:/a:thekelleys:dnsmasq

Required KB Items: dns_server/version, Settings/ParanoidReport

Exploit Ease: No known exploits are available

Patch Publication Date: 1/22/2013

Vulnerability Publication Date: 1/11/2013

Reference Information

CVE: CVE-2013-0198

BID: 57458